/**
 * 
 */
package com.salessys.persistence;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

/**
 * @author denes
 *
 */
public class FilterHibernateConn implements Filter {

	private SessionFactory sf;

	@Override
	public void destroy() {


	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletFilterResponse,
			FilterChain chain) throws IOException, ServletException {
		try{
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletFilterResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		}catch(Throwable ex){
			try {
				if(this.sf.getCurrentSession().getTransaction().isActive()) {
					this.sf.getCurrentSession().getTransaction().rollback();
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
			throw new ServletException();
		}


	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
		this.sf = HibernateUtil.getSession();

	}

}
